545550545891 has 12 divisors (see below), whose sum is σ = 591011430048. Its totient is φ = 503357216544.

The previous prime is 545550545863. The next prime is 545550545893. The reversal of 545550545891 is 198545055545.

It is a de Polignac number, because none of the positive numbers 2^k-545550545891 is a prime.

It is a super-3 number, since 3×545550545891³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (545550545893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355355 + ... + 1103348.

It is an arithmetic number, because the mean of its divisors is an integer number (49250952504).

Almost surely, 2^545550545891 is an apocalyptic number.

545550545891 is a deficient number, since it is larger than the sum of its proper divisors (45460884157).

545550545891 is a wasteful number, since it uses less digits than its factorization.

545550545891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460942 (or 1460929 counting only the distinct ones).

The product of its (nonzero) digits is 18000000, while the sum is 56.

The spelling of 545550545891 in words is "five hundred forty-five billion, five hundred fifty million, five hundred forty-five thousand, eight hundred ninety-one".